Detachable reservoir for pens.



No. 654,500. Patented m 24, 1900. E. WALDEN. DETAGHABLE RESERVOIR FOR PENS (Application filed Oct. 23, 1899.)

(No Model.)

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EDWIN W'ALDEN, OF LYNN, MASSACHUSETTS.

DETACHABLE asssavom FOR PENS.

srfncrnrcnrron forming as or was Patent No. e54 ,5oo, dated July 24, con.

application filedOctober 23, $ieria11flo. 734,488. No m odehl l v V i To coZZ whom it may concern.-

Be it known that I, EDWIN WALDEN, a citi zen of the United States, residing at Lynn, in

v the county of Essex, State of Massachusetts,

have invented a certain new and useful Improvement in Detachable Reservoirs for Pens,

of which the following is a specification, ref-.

erence beinghad therein to the accompanying drawings.

My invention consists in a fountain or reservoir of improved character and construction, as hereinafter set forthand'specified in the claim, for use in connection withordinary pens and capable of taking up at a single dip and holding a suf iicient quantity of ink to enable a very large aniount'of writing to be done before the supply carried by the pen becomes exhausted. Many'attempts in the same direction have been made heretofore, but without the attainment of practical and satisfactory results. As heretofore made and applied fountains or reservoirs used in connection with ordinary pens have in all cases known to me been found unsatisfactory and deficient. Some of them are incapable of taking up more than a minimum quantity of ink, hardly more than the pen alone would itself take up. In the case of all that I have yet become acquainted with the fountain or reservoir and the pen to which it is applied speedily become clogged up with the solid constituents of the ink and highly corroded, so as soon to render them both useless.

The objects of my invention are to produce a fountain or reservoir which shall be adapted to be applied to a great variety of the steel and other pens now in use and to be fitted, with such pens, to ordinary penholders of the characters commonly in use and which shall be adapted to take up a plentiful supply of ink when dipped into the latter, as well as retain the same safely until it has been consumed; also, to produce a fountain or reservoir from which any unused ink may readily be discharged when it is desired to discontinue writing and which shall admit of being cleaned readily and completely with the aid of any ordinary sponge or pen-wiper without separating the fountain or reservoir from the pen.

The accompanying drawings illustrate an embodiment of the invention.

In the drawings, Figure 1 shows in side elevation a well known form of penholder having applied thereto asteel pen of ordinary pattern and also afountain or reservoir made in accordance withgmy'invention. Fig. 2 is a'bottom view of thesamel Fig. 3 isa view in longitudinal section on line 3 3 of Fig. 2. Fig. 4 is a view in cross-section on line 44. of Fig. 1. Fig. 5 is a view in crosssection on line 5 5 of-Fig. 1. Fig. 6 is a view in cross section on line 6 6 of Fig. 1. Fig. 7 showsin side elevation, detached, a device embodying theinvention. Fig. 8 shows the same in plan, also detached.

l designates the body of the penholder, it being herein supposed to be composed of some plastic material or composition molded into form. 2 is a sheet-metal lining for the pen-receiving end of the said body. 3 is what maybe termed the elastic split plug, which is located inside the said lining. As is well understood, a pen 4 is secured in place in such a penholder by forcing the shank of the pen in between the lining 2 and the split plug 3. (See Fig. 3.)

My improved fountain or reservoir (see more particularly Figs. 7 and 8) comprises the shank portion 5, the shoulder 6, the body or waist portion 7, and the nib portion 8.

The shank portion 5 of my reservoir corresponds in curvature in its cross-section with theshank portion of a common pen 4.. (See Fig. 5.) This enables it to be fitted snugly within the said shank portion of a pen and to be slipped along with the latter into place between the split plug 3 and the surrounding metal lining 2. Thereby the reservoir and pen are held securely in proper relations with each other during use.

The body or waist portion 7 of the reservoir bridges the wide portion of the pen above the angles 41 41 at the bases ofthe nibs of the pen. This portion usually is made slightly concaved or hollow, as in Fig.

5, in order to enable it to hold ink the more securely, although this feature is not essential, and it may be more or less perfectly fiat.

The nib 8 inclines toward the nibs of the pen, sothat while quite a space, comparatively speaking, exists between the waist or body of the reservoir and the corresponding portion of the pen the tip of the nib' 8 ap proaches 'quiteclosely to the nibsof the pen,

near their free extremities; V

Characteristic features of the reservoir are the open spaces 81 81, which are left at the side edges of the nib 8, between the same and the converging edges of the forward part of the pen.

9 is an air-vent which is formed through. the waist or body portion 7 ator closely ad- 5 v pen, of the detachable or independent reserjacent the shoulder 6. The shoulder 6 determines the inner ,end of the ink-holding cavity or space between the body of the-penand the reservoir. When the pen and reser-- voir are dipped into ink, the latter passes immediately and quickly through the side openings 81 81 and fills the interior space,

while the air finds its way out through vent. ,9; The said openings are not-su-fliciently WlClBr to permit ink to drip from the pen.

under ordinary handling. However, inasmuch asnopart of the niblis in. actual contact with the tapering part of the pen. itis readilypossible-to shake or jar by a properlydirected movement any unused ink from between the reservoir and pen, leaving. the

parts clean and free. These sid'ezopenin'gs, moreover, enable all the said ink to be reis obviated the serious trouble which has practically proved fatal to the success of prior endeavors in this line-namely, the

,tendency to clogging. and filling up with solid matter and the tendency to corrosion.

I claim as my inventi0nv H The combination with a penholder and voir having the curved shank portion fitting within the shank of the penand inserted with the latter into the penholder, the said reservoirhaving also the waist or body portion 7 bridging the hollow of the corresponding portion of the pen, theshoulder 6, the

vent, and. the tapering nib 8 separated at itsedgesand tipby spaces from the corre=- sponding'portionofi the pen, and inclining at its tiptoward the latter, substantially asdescribed.

In testimony whereof I affix my signature- 

